;(function(window) {
	  var num = 200;
		var w = window.innerWidth;
		var h = window.innerHeight;
		var max = 100;
		var _x = 0;
		var _y = 0;
		var _z = 150;
		var dtr = function(d) {
		  return d * Math.PI / 180;
		};

		var rnd = function() {
		  return Math.sin(Math.floor(Math.random() * 360) * Math.PI / 180);
		};
		var dist = function(p1, p2, p3) {
		  return Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2) + Math.pow(p2.z - p1.z, 2));
		};

		var cam = {
		  obj: { x: _x,y: _y, z: _z},
		  dest: {x: 0, y: 0,z: 1},
		  dist: {x: 0,y: 0,z: 200},
		  ang: {cplane: 0,splane: 0,ctheta: 0,stheta: 0},
		  zoom: 1,
		  disp: {x: w / 2,y: h / 2,z: 0},
		  upd: function() {
		    cam.dist.x = cam.dest.x - cam.obj.x;
		    cam.dist.y = cam.dest.y - cam.obj.y;
		    cam.dist.z = cam.dest.z - cam.obj.z;
		    cam.ang.cplane = -cam.dist.z / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.z * cam.dist.z);
		    cam.ang.splane = cam.dist.x / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.z * cam.dist.z);
		    cam.ang.ctheta = Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.z * cam.dist.z) / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.y * cam.dist.y + cam.dist.z * cam.dist.z);
		    cam.ang.stheta = -cam.dist.y / Math.sqrt(cam.dist.x * cam.dist.x + cam.dist.y * cam.dist.y + cam.dist.z * cam.dist.z);
		  }
		};

		var trans = {
		  parts: {
		    sz: function(p, sz) {
		      return {
		        x: p.x * sz.x,
		        y: p.y * sz.y,
		        z: p.z * sz.z
		      };
		    },
		    rot: {
		      x: function(p, rot) {
		        return {
		          x: p.x,
		          y: p.y * Math.cos(dtr(rot.x)) - p.z * Math.sin(dtr(rot.x)),
		          z: p.y * Math.sin(dtr(rot.x)) + p.z * Math.cos(dtr(rot.x))
		        };
		      },
		      y: function(p, rot) {
		        return {
		          x: p.x * Math.cos(dtr(rot.y)) + p.z * Math.sin(dtr(rot.y)),
		          y: p.y,
		          z: -p.x * Math.sin(dtr(rot.y)) + p.z * Math.cos(dtr(rot.y))
		        };
		      },
		      z: function(p, rot) {
		        return {
		          x: p.x * Math.cos(dtr(rot.z)) - p.y * Math.sin(dtr(rot.z)),
		          y: p.x * Math.sin(dtr(rot.z)) + p.y * Math.cos(dtr(rot.z)),
		          z: p.z
		        };
		      }
		    },
		    pos: function(p, pos) {
		      return {
		        x: p.x + pos.x,
		        y: p.y + pos.y,
		        z: p.z + pos.z
		      };
		    }
		  },
		  pov: {
		    plane: function(p) {
		      return {
		        x: p.x * cam.ang.cplane + p.z * cam.ang.splane,
		        y: p.y,
		        z: p.x * -cam.ang.splane + p.z * cam.ang.cplane
		      };
		    },
		    theta: function(p) {
		      return {
		        x: p.x,
		        y: p.y * cam.ang.ctheta - p.z * cam.ang.stheta,
		        z: p.y * cam.ang.stheta + p.z * cam.ang.ctheta
		      };
		    },
		    set: function(p) {
		      return {
		        x: p.x - cam.obj.x,
		        y: p.y - cam.obj.y,
		        z: p.z - cam.obj.z
		      };
		    }
		  },
		  persp: function(p) {
		    return {
		      x: p.x * cam.dist.z / p.z * cam.zoom,
		      y: p.y * cam.dist.z / p.z * cam.zoom,
		      z: p.z * cam.zoom,
		      p: cam.dist.z / p.z
		    };
		  },
		  disp: function(p, disp) {
		    return {
		      x: p.x + disp.x,
		      y: -p.y + disp.y,
		      z: p.z + disp.z,
		      p: p.p
		    };
		  },
		  steps: function(_obj_, sz, rot, pos, disp) {
		    var _args = trans.parts.sz(_obj_, sz);
		    _args = trans.parts.rot.x(_args, rot);
		    _args = trans.parts.rot.y(_args, rot);
		    _args = trans.parts.rot.z(_args, rot);
		    _args = trans.parts.pos(_args, pos);
		    _args = trans.pov.plane(_args);
		    _args = trans.pov.theta(_args);
		    _args = trans.pov.set(_args);
		    _args = trans.persp(_args);
		    _args = trans.disp(_args, disp);
		    return _args;
		  }
		};

		(function() {
		  "use strict";
		  var threeD = function(param) {
		    this.transIn = {};
		    this.transOut = {};
		    this.transIn.vtx = (param.vtx);
		    this.transIn.sz = (param.sz);
		    this.transIn.rot = (param.rot);
		    this.transIn.pos = (param.pos);
		  };

		  threeD.prototype.vupd = function() {
		    this.transOut = trans.steps(
		      this.transIn.vtx,
		      this.transIn.sz,
		      this.transIn.rot,
		      this.transIn.pos,
		      cam.disp
		    );
		  };

		  var Build = function() {
		    this.vel = 0.04;
		    this.lim = 360;
		    this.diff = 200;
		    this.initPos = 100;
		    this.toX = _x;
		    this.toY = _y;
		    this.go();
		  };

		  Build.prototype.go = function() {
		    this.canvas = document.getElementById("canv");
		    this.canvas.width = window.innerWidth;
		    this.canvas.height = window.innerHeight;
		    this.$ = this.canvas.getContext("2d");
		    this.$.globalCompositeOperation = 'source-over';
		    this.varr = [];
		    this.dist = [];
		    this.calc = [];

		    for (var i = 0, len = num; i < len; i++) {
		      this.add();
		    }

		    this.rotObj = {x: 0,y: 0,z: 0};
		    this.objSz = {x: w / 5,y: h / 5,z: w / 5};
		  };

		  Build.prototype.add = function() {
		    this.varr.push(new threeD({
		      vtx: {x: rnd(),y: rnd(),z: rnd()},
		      sz: {x: 0,y: 0,z: 0},
		      rot: {x: 20,y: -20,z: 0},
		      pos: {
		        x: this.diff * Math.sin(360 * Math.random() * Math.PI / 180),
		        y: this.diff * Math.sin(360 * Math.random() * Math.PI / 180),
		        z: this.diff * Math.sin(360 * Math.random() * Math.PI / 180)
		      }
		    }));
		    this.calc.push({
		      x: 360 * Math.random(),
		      y: 360 * Math.random(),
		      z: 360 * Math.random()
		    });
		  };

		  Build.prototype.upd = function() {
		    cam.obj.x += (this.toX - cam.obj.x) * 0.05;
		    cam.obj.y += (this.toY - cam.obj.y) * 0.05;
		  };

		  Build.prototype.draw = function() {
		    this.$.clearRect(0, 0, this.canvas.width, this.canvas.height);
		    cam.upd();
		    this.rotObj.x += 0.1;
		    this.rotObj.y += 0.1;
		    this.rotObj.z += 0.1;

		    for (var i = 0; i < this.varr.length; i++) {
		      for (var val in this.calc[i]) {
		        if (this.calc[i].hasOwnProperty(val)) {
		          this.calc[i][val] += this.vel;
		          if (this.calc[i][val] > this.lim) this.calc[i][val] = 0;
		        }
		      }

		      this.varr[i].transIn.pos = {
		        x: this.diff * Math.cos(this.calc[i].x * Math.PI / 180),
		        y: this.diff * Math.sin(this.calc[i].y * Math.PI / 180),
		        z: this.diff * Math.sin(this.calc[i].z * Math.PI / 180)
		      };
		      this.varr[i].transIn.rot = this.rotObj;
		      this.varr[i].transIn.sz = this.objSz;
		      this.varr[i].vupd();
		      if (this.varr[i].transOut.p < 0) continue;
		      var g = this.$.createRadialGradient(this.varr[i].transOut.x, this.varr[i].transOut.y, this.varr[i].transOut.p, this.varr[i].transOut.x, this.varr[i].transOut.y, this.varr[i].transOut.p*2);
		      this.$.globalCompositeOperation = 'lighter';
		       g.addColorStop(0, 'hsla(255, 255%, 255%, 1)');
		        g.addColorStop(.5, 'hsla('+(i+2)+',85%, 40%,1)');
		        g.addColorStop(1,'hsla('+(i)+',85%, 40%,.5)');
		        this.$.fillStyle = g;
		      this.$.beginPath();
		      this.$.arc(this.varr[i].transOut.x, this.varr[i].transOut.y, this.varr[i].transOut.p * 2, 0, Math.PI * 2, false);
		      this.$.fill();
		      this.$.closePath();
		    }
		  };
		  Build.prototype.anim = function() {
		    window.requestAnimationFrame = (function() {
		      return window.requestAnimationFrame ||
		        function(callback, element) {
		        window.setTimeout(callback, 1000 / 60);
		      };
		    })();
		    var anim = function() {
		      this.upd();
		      this.draw();
		      window.requestAnimationFrame(anim);
		    }.bind(this);
		    window.requestAnimationFrame(anim);
		  };

		  Build.prototype.run = function() {
		    this.anim();

		    window.addEventListener('mousemove', function(e) {
		      this.toX = (e.clientX - this.canvas.width / 2) * -0.8;
		      this.toY = (e.clientY - this.canvas.height / 2) * 0.8;
		    }.bind(this));
		    window.addEventListener('touchmove',function(e){
		      e.preventDefault();
		      this.toX = (e.touches[0].clientX - this.canvas.width / 2) * -0.8;
		      this.toY = (e.touches[0].clientY - this.canvas.height / 2) * 0.8;
		    }.bind(this));
		    window.addEventListener('mousedown', function(e) {
		      for (var i = 0; i < 100; i++) {
		        this.add();
		      }
		    }.bind(this));
		    window.addEventListener('touchstart', function(e) {
		      e.preventDefault();
		      for (var i = 0; i < 100; i++) {
		        this.add();
		      }
		    }.bind(this));
		  };
		  var app = new Build();
		  app.run();
		})();
		window.addEventListener('resize',function(){
		 canvas.width = w = window.innerWidth;
		 canvas.height = h = window.innerHeight;
		}, false);
})(window);